TMS320F280037C: Firmware update over MCAN module without changing bootpin config

David Capdevila

Part Number: TMS320F280037C
Other Parts Discussed in Thread: C2000WARE

Hello,

I am interested in developping a firmware updating tool based on CAN of CAN FD without the need of changing the boot pin configuration.

The requirements are as follows:

- App is booted to flash by default.

- When receiving a command through MCAN module, the device enters in firmware updating mode where if i am correct, the device should switch to the CAN bootloader and receive the program.

- The device can be restarted as much as needed

- We are interested in running the application right away so flash booting is the deault configuration

I have the following questions:

- Which are the mechanism to accomplish the switch from main applicaiton to kernel?

- IS MCAN available for firmware updating?

- Do you have and PC side already developped tool that sends the aplcaion and commands?

- Is there any better way to perform the firmware update?

-From what i have seen in another post, it is possible to send an invalid message in the SCI bootloader case to boot in flash mode but we are not interested in that solution. Is it possible to leave the default botting option to flash and by software change the boot mode and start a firmware update?

over 2 years ago

0 David Capdevila over 2 years ago

Intellectual 280 points

Update:

I found another post where it resembles to my case. https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/984448/tms320f28388d-firmware-update . However, I could not understand properly the post. It seems like the have two bootloaders but i could not undestand how to implement them and how they decide which booting option is selected. Can you please confirm if that option would be posible?

0 Rajeshwary Nitin Bongirwar over 2 years ago in reply to David Capdevila

TI__Expert 5890 points

Hi David,

We do have CAN Flash Programmer for F28003x at {C2000Ware_root}\utilities\flash_programmers\can_flash_programmer. The can_flash_programmer needs to be used with the can flash kernel project available in C2000Ware for the F28003x device at {C2000Ware_root}/driverlib/f28003x/examples/flash.

The CAN flash programmer can be used to perform firmware updates via MCAN on the F28003x device.

C2000ware can be downloaded at https://www.ti.com/tool/download/C2000WARE/5.00.00.00

Refer below document for more details,

https://www.ti.com/lit/an/sprabv4f/sprabv4f.pdf?ts=1696523424059

Hope this will be useful.

Regards,

Rajeshwary

0 David Capdevila over 2 years ago in reply to Rajeshwary Nitin Bongirwar

Intellectual 280 points

Hi Rajeshwary,

Thank you for the application note, I find it really interesting. However, i believe it will be quite complicated to implement at our stage of development. Which other options are possible? From a video of TI about bootloading 101, several options are explained. One of them is to flash the bootloader in a sector that will never be erased and simply call the bootloader from the application when a condition if fulfilled. Which do you think is the best implementation regarding our requirements?

Regards,

David

0 Rajeshwary Nitin Bongirwar over 2 years ago in reply to David Capdevila

TI__Expert 5890 points

Hi David,

The approach to flash the bootloader in a sector that will never be erased and simply call the bootloader from the application when a condition if fulfilled as long as bootloader and application are not operating on the same bank can be work on, this is similar to LFU reference design.

We have reference design for LFU which can be helpful

https://www.ti.com/lit/ug/tiduey4d/tiduey4d.pdf?ts=1697494290171

Regards,

Rajeshwary

0 David Capdevila over 2 years ago in reply to Rajeshwary Nitin Bongirwar

Intellectual 280 points

Hi Rajeshwary,

Thank your for your response. I will study this application note as well. I would like also to know from your point of view which approach is more interesting in regards of complexity and capabilities

0 Sira Rao80 over 2 years ago in reply to David Capdevila

TI__Mastermind 26875 points

"as long as bootloader and application are not operating on the same bank " -> this condition is not necessary.

0 David Capdevila over 2 years ago in reply to Sira Rao80

Intellectual 280 points

It would be possible to make a copy of that flash sector in RAM, erase it and recover the bootloader only right?

+1 Rajeshwary Nitin Bongirwar over 2 years ago in reply to David Capdevila

TI__Expert 5890 points

Hi David,

Instead of copying Bootloader sector to RAM and erasing bank and restoring. You can only erase sectors where application is present and program it..

Regards,

Rajeshwary

0 David Capdevila over 2 years ago in reply to Rajeshwary Nitin Bongirwar

Intellectual 280 points

Hi Rajeshwary,

Thanks for your recommendations. I think I can start working on it and I may create another post in the future for further help.

Regards,

David

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TMS320F280037C: Firmware update over MCAN module without changing bootpin config